Home / 21,407.75-29,552.60-12,451.98

Finding the Fourth Proportional to 21,407.75, 29,552.60 and 12,451.98

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Solution

The fourth proportional to 21,407.75, 29,552.60 and 12,451.98 is: 17,189.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407.75 : 29,552.60 = 12,451.98 : x
  2. Step 2: Convert to fraction form
    21,407.75/29,552.60 = 12,451.98/x
  3. Step 3: Cross multiply
    21,407.75x = 29,552.60 × 12,451.98
  4. Step 4: Simplify right side
    21,407.75x = 367,988,415.28
  5. Step 5: Solve for x
    x = 367,988,415.28/21,407.75
  6. Step 6: Final answer
    x = 17,189.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.